CN108598553B - Thermal management double-shell lithium ion battery - Google Patents
Thermal management double-shell lithium ion battery Download PDFInfo
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- CN108598553B CN108598553B CN201810413237.0A CN201810413237A CN108598553B CN 108598553 B CN108598553 B CN 108598553B CN 201810413237 A CN201810413237 A CN 201810413237A CN 108598553 B CN108598553 B CN 108598553B
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- Prior art keywords
- heat management
- double
- lithium ion
- management medium
- ion battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a heat management double-shell lithium ion battery.A plurality of flow channel reinforcing ribs are arranged on the outer wall surface of a lithium ion battery body, a heat management medium flow channel is formed between the adjacent flow channel reinforcing ribs, a heat management medium uniform-scattering and converging cavity is arranged on the upper end surface of the lithium ion battery body and positioned at the outer sides of a positive electrode and a negative electrode, and the heat management medium uniform-scattering and converging cavity is communicated with the heat management medium flow channel; the lithium ion battery body is arranged in the double-layer shell, the positive electrode and the negative electrode extend out of the double-layer shell, the heat management medium inlet and the heat management medium outlet are fixedly connected to the outer wall of the double-layer shell, and the heat management medium inlet and the heat management medium outlet are correspondingly communicated with the two heat management medium collecting cavities. The temperature and the flow speed of the medium entering the double-shell lithium ion battery are regulated and controlled by the heat management medium temperature control system, so that the temperature of the power battery can be effectively controlled.
Description
The technical field is as follows:
the invention relates to a thermal management double-shell lithium ion battery.
Background art:
the power battery is one of the core components of the electric automobile, and the performance of the power battery is inseparable from the thermal management of the battery. For example, in a lithium battery, the battery life is shortened due to an excessively high temperature, and even thermal runaway of the battery is caused in a severe case. The charge and discharge of the battery, the capacity of the battery and the like are affected by the excessively low temperature of the battery. Meanwhile, the imbalance of the temperature of each single battery of the battery pack affects the capacity of the whole battery pack.
Common power battery thermal management modes include liquid medium thermal management, air medium thermal management, phase-change material thermal management, heat pipe thermal management, or a combination of several thermal management modes. The power battery heat management modes rarely actively change the structure of a single battery to improve the heat management efficiency of the battery pack.
Prismatic cells are a common form of commercial lithium ion power cells, and as cell capacity increases, their volume continues to increase. This results in cell heat not being easily managed. A water cooling plate is added between the single batteries to manage the temperature of the batteries, so that the heat transfer effect is poor, the structure is complex, and the energy density of the batteries is low.
The invention content is as follows:
the present invention provides a thermal management double-shell lithium ion battery to solve the problems of the prior art.
The technical scheme adopted by the invention is as follows: a heat management double-shell lithium ion battery comprises a lithium ion battery body, wherein a positive electrode and a negative electrode are arranged on the lithium ion battery body, the heat management double-shell lithium ion battery further comprises a heat management medium inlet, a heat management medium outlet and a double-layer shell, a plurality of flow channel reinforcing ribs are arranged on the outer wall surface of the lithium ion battery body, a heat management medium flow channel is formed between every two adjacent flow channel reinforcing ribs, a heat management medium uniform-scattering and collecting cavity is arranged on the outer side of the positive electrode and the outer side of the negative electrode on the upper end surface of the lithium ion battery body, and the heat management medium uniform-scattering and collecting cavity; the lithium ion battery body is arranged in the double-layer shell, the positive electrode and the negative electrode extend out of the double-layer shell, the heat management medium inlet and the heat management medium outlet are fixedly connected to the outer wall of the double-layer shell, and the heat management medium inlet and the heat management medium outlet are correspondingly communicated with the two heat management medium collecting cavities.
Further, the double-layer shell is made of aluminum.
The invention has the following beneficial effects:
1. the temperature and the flow speed of the medium entering the double-shell lithium ion battery are regulated and controlled by the heat management medium temperature control system, so that the temperature of the power battery can be effectively controlled.
2. The double-shell lithium ion battery has a compact structure, does not need to additionally increase parts, and has good sealing property. Meanwhile, the thermal management heat resistance of the battery is small, the heat exchange area is large, and the thermal management efficiency of the battery is effectively improved.
3. The double-layer shell has simple structure, convenient processing and high standardization degree, and can be produced in large scale.
Description of the drawings:
fig. 1 is a schematic diagram of the overall structure of a thermal management double-shell lithium ion battery.
Fig. 2 is a schematic structural view of a thermal management medium flow channel of a thermal management double-shell lithium ion battery.
1-heat management medium inlet, 2-anode, 3-cathode, 4-heat management medium outlet, 5-double-layer shell, 6-heat management medium runner, 7-runner reinforcing rib, 8-heat management medium uniform-scattering and collecting cavity and 9-lithium ion battery body.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, the heat management double-shell lithium ion battery of the invention comprises a lithium ion battery body 9, a heat management medium inlet 1, a heat management medium outlet 4 and a double-layer shell 5, wherein a positive electrode 2 and a negative electrode 3 are arranged on the lithium ion battery body 9, a plurality of flow channel reinforcing ribs 7 are arranged on the outer wall surface of the lithium ion battery body 9, a heat management medium flow channel 6 is formed between the adjacent flow channel reinforcing ribs 7, a heat management medium uniform diffusion and collection cavity 8 is arranged on the upper end surface of the lithium ion battery body 9 and positioned at the outer sides of the positive electrode and the negative electrode, and the heat management medium uniform diffusion and collection cavity 8 is communicated with the heat management medium flow channel 6. The lithium ion battery body 9 is arranged in the double-layer shell 5, the anode 2 and the cathode 3 extend out of the double-layer shell 5, the heat management medium inlet 1 and the heat management medium outlet 4 are fixedly connected to the outer wall of the double-layer shell 5, and the heat management medium inlet 1 and the heat management medium outlet 4 are correspondingly communicated with the two heat management medium uniform collecting cavities 8.
The double-layer housing 5 is made of aluminum.
The heat exchange medium in the double-layer shell 5 flows through to manage the temperature of the battery. The lengths of the heat management medium flow channels 6 are equal, so that the on-way resistance is ensured to be the same, the heat management medium can be uniformly distributed on the surface of the battery shell, and the heat exchange area of the single battery is increased. The flow channel reinforcing ribs 7 play a role in supporting the flow channel and prevent the double-layer shell of the battery from deforming under stress. The thermal management medium homogenizing manifold 8 enables the thermal management medium entering the double shell to enter each flow passage evenly.
The inner layer of the double-layer shell with the runner reinforcing ribs 7 is manufactured through a one-step forming process. And then welding the double-layer shell outer layer thin aluminum plate on the flow channel reinforcing rib 7 through a welding process to form the double-layer shell. The flow channels in the double shell, which maintain the same length, can be designed as shown in fig. 2.
In order to ensure that the flow of the thermal management medium entering the flow channel of the shell is the same, a uniform thermal management medium collecting cavity 8 is designed, and an inlet and an outlet of the thermal management medium are connected with an outer pipeline through a sealing clamp or threads. For the heat management medium circulation of the power battery, liquid flow channels of the double-shell lithium ion battery are connected in parallel, so that the medium flow entering each single battery is the same as much as possible, and the uniformity of the temperature of each single battery of the power battery is finally ensured.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (1)
1. A heat management double-shell lithium ion battery comprises a lithium ion battery body (9), wherein a positive electrode (2) and a negative electrode (3) are arranged on the lithium ion battery body (9), and the heat management double-shell lithium ion battery is characterized by further comprising a heat management medium inlet (1), a heat management medium outlet (4) and a double-layer shell (5), a plurality of flow channel reinforcing ribs (7) are arranged on the outer wall surface of the lithium ion battery body (9), a heat management medium flow channel (6) is formed between every two adjacent flow channel reinforcing ribs (7), a heat management medium uniform diffusion and collection cavity (8) is arranged on the upper end surface of the lithium ion battery body (9) and positioned on the outer sides of the positive electrode and the negative electrode, and the heat management medium uniform diffusion and collection cavity (8) is communicated with the heat; the lithium ion battery body (9) is arranged in the double-layer shell (5), the anode (2) and the cathode (3) extend out of the double-layer shell (5), the heat management medium inlet (1) and the heat management medium outlet (4) are fixedly connected to the outer wall of the double-layer shell (5), the heat management medium inlet (1) and the heat management medium outlet (4) are correspondingly communicated with the two heat management medium scattering and collecting cavities (8), and the heat management medium flow channels 6 are equal in length;
the double-layer shell (5) is made of aluminum, the inner layer of the double-layer shell with the runner reinforcing ribs (7) is manufactured through a one-step forming process, and then the outer thin aluminum plate of the double-layer shell is welded on the runner reinforcing ribs (7) through a welding process to form the double-layer shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413237.0A CN108598553B (en) | 2018-05-03 | 2018-05-03 | Thermal management double-shell lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810413237.0A CN108598553B (en) | 2018-05-03 | 2018-05-03 | Thermal management double-shell lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108598553A CN108598553A (en) | 2018-09-28 |
| CN108598553B true CN108598553B (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810413237.0A Active CN108598553B (en) | 2018-05-03 | 2018-05-03 | Thermal management double-shell lithium ion battery |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010013025A1 (en) * | 2010-03-26 | 2011-09-29 | Daimler Ag | Vehicle battery e.g. lithium ion battery for hybrid car, has cooling plate arranged in housing for controlling temperature of battery, where plate is provided with molds, and cooling pipe held in molds in force and/or form fit manner |
| CN102237548B (en) * | 2010-05-04 | 2014-02-19 | 微宏动力系统（湖州）有限公司 | Assembled cell having built-in liquid cooling structure |
| CN202957301U (en) * | 2012-08-28 | 2013-05-29 | 淄博贝林特种电池科技有限公司 | Nickel metal hydride power battery heat dissipation outer shell |
| CN204045698U (en) * | 2014-07-31 | 2014-12-24 | 延锋伟世通电子科技（上海）有限公司 | Automobile lithium battery system hypothermia starts servicing unit |
| DE102016106021A1 (en) * | 2016-01-21 | 2017-07-27 | Jobst H. KERSPE | Method for producing a battery case |
| CN206134771U (en) * | 2016-10-14 | 2017-04-26 | 苏州安靠电源有限公司 | Safe type battery box and power battery who has this battery box |
| CN206180042U (en) * | 2016-10-20 | 2017-05-17 | 浙江康盛热交换器有限公司 | Battery cooling plate |
| CN107611288A (en) * | 2017-09-15 | 2018-01-19 | 河南新太行电源股份有限公司 | A kind of battery case and battery with heat radiation sandwich layer |
| CN107919494B (en) * | 2017-11-28 | 2019-09-13 | 广东省肇庆市质量计量监督检测所 | A kind of temperature controllable type lithium ion battery module for vehicles |
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2018
- 2018-05-03 CN CN201810413237.0A patent/CN108598553B/en active Active
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| CN108598553A (en) | 2018-09-28 |
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